International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 09 | Sep 2022
p-ISSN: 2395-0072
www.irjet.net
FLEXURAL CHARACTERISTICS OF REINFORCED CONCRETE WITH CRIMPED STEEL FIBER AND POLYPROPYLENE BHARANIDHARAN K UG scholar, Dept. of civil Engineering, DSCE college,Perambalur, Tamilnadu, India. ---------------------------------------------------------------------***--------------------------------------------------------------------1.1 POLYPROPYLENE FIBER Abstract - In this study, Secondary sector plays an important role in our country. Our construction technique sometimes results in failure such as collapse. To Overcome this failures, we are going to study the addition of polypropylene fiber and crimped steel fiber in the concrete. This will increase the flexural, shear performance and brittleness of the building even in the poor soil packing site. This study also improves the strength of reinforced concrete by providing the combination of polypropylene and crimped steel fiber. This project work polypropylene fiber and crimped steel fiber different percentage (0.4%, 0.8%, 1.2%) are added in the concrete and using M30. Tests on the concrete compressive strength, split tensile strength, flexural resistance.
Polypropylene fiber is a synthetic fiber formed from a polypropylene melt. It is cheap, abundantly available, and like all manmade fibers of consistent quality. High ductility and reduction in amount of concrete.
Key Words: Polypropylene fiber, Crimped steel fiber, Compressive strength, Split tensile strength, Flexural resistance.
Fig-1 Polypropylene fiber
1. INTRODUCTION
1.2 CRIMPED STEEL FIBER
The fibers both polypropylene and crimped steel fiber are used to increase the the toughness and crack resistance. With the use of crimped steel fiber we can reduce the conventional reinforcement or even without conventional reinforcement, we can construct building. This fiber will increase the load carrying capacity this result in prevention of the building from collapse even if human error takes place in the building, these fibers will prevent from failure by increasing the load carrying capacity. One application of the fiber is to increase the load carrying capacity of concrete subjected to shear. Most of the design methods and tests procedures have been developed only for the evaluation of steel fiber reinforced concrete. The fiber controlled the crack resistance and corrosion of the building.
Crimped steel fibers are made from hard drawn steel wire, ensuring high tensile strength and close tolerances. It is glued into bundles, ensuring quick and easy mixing, with perfect homogenous distribution. It has high toughness. Greatly improved impact, fatigue, and resistance.
Easy processing
Low specific gravity
Almost zero water adsorption
Good chemical resistance
1) Reduced maintenance and repair
Wide availability and low cost
High ductility
2) The size of structural members like beams and columns are reduced since smaller section are enough to carry high loads
Fig-2 Crimped steel fiber
1.3 ADVANTAGES OF HIGH STRENGTH CONCRETE
3) Since the size of members are reduced the cost of formworks are less.
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